New Member and Tractor owner

Aloha, New member from Hawaii, just purchased a used 2006 GT 5000, 26 HP, 48" Deck. When I get it running again, I'll be using it as light duty farm use on our 1 acre lot. I do plan on upgrading this unit to run hydraulics for attachments, a DIY FEL, drag bucket, and others, but first I have to get it started.
When I picked it up it ran fine- started up first turn and loaded into my truck fine (straight shot). Started up and offloaded fine, though when I bought it, it only turned right. It was the steering sector and I knew that when I bought it. Limped it to the slab I have for storage, and got the part changed out; I go to start it and nothing. I figure it's in the electrics, either the seat switch, the Gear lever switch, or something of that line.

Anyone have any ideas on how to bypass these items to rule them in or out as the troublemaker?

When it did run, it was a good puller and I am looking forward to building the attachments to get my farm chores done more easily. That is what these are for right?

I didn't understand if you fixed the steering then in drive or just what?? Might be you pulled some wiring back out of way and unplugged some safety switch? Might be one on trans shifter, the brake pedal or clutch pedal, one I'm thinking you could have pulled easy, or pto switch position, and again Seat has one too, if you removed any of that to get to the repaired parts. Get an owner's manual to see all the safety steps and starting procedure, maybe you are missing a step?

Go to the top of this page, find the "manuals" tab. Search there for your manual. Without more information the answers to your questions can only very general. For all brands and wiring schemes the first step is to check the battery. Then a careful visual inspection, look for lose connections, disconnected wires, corroded connections, bare wires/shorts. Lots of time and patience should be devoted to the inspection. What you learn will likely help sometime in the future if not now. I suspect corrosion may be more of a problem at your location than say Arizona. Good luck and welcome aboard. Don